/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Add dependent hierarchies that listens to changes made to this hierarchy Note:Bydefault, only changes to the initial states of this hierarchy is mirrored to the listening hierarchies
void RegisterListeningHierarchy ( [URigHierarchy](API\Plugins\ControlRig\Rigs\URigHierarchy) * InHierarchy )